steve, do you think we can squeeze out a good day? >> yes, we have started off the past few days with 70-degree temperatures and it will be on the mild to warm side with a few low, even a couple of 70s and here is sal. >>> traffic looks good heading out to the high-rise with no major problems and the morning commute looks good as you drive into the city with no major problems on the span. >>> late night explosion and fire inside san francisco city hall. the smoke spread through the building including the rotunda. claudine wong is there and pg&e is there trying to get power back, what is going on claudine? >>> you can hear the hummers. >> reporter: they do have power and let me show you what is happening now. you have two pg&e crews. let me take you up the steps of city hall. they are basically on the side of st. hall and they have two big generators and that hum is working over time. we have seen crews set up in and around that area and i asked when they would be back and he said he would not know and they tried sent somebody out to t